10,000 Simoleons
At any time during your game (when you are in the house of a Sim) press and hold B, then press Up, Left, Down, then Right, then you will hear a chime. You can then release B and within seconds, the Cheat Gnome will appear in front of your house near the sidewalk. You can then select him repeatedly for 10,000 (actually 9,999) Simoleons each time!

You can then go to grab mode and place him in the inventory, if desired. No effect, just for fun.

Advance time six hours
Enable the "Cheat Gnome" code, then press Right five times, Left. An option to advance time by six hours will now appear on the Cheat Gnome.

Alien abduction
If you stargaze long enough you will be abducted by aliens. When you come back you will be sick.

Change skills
Enable the "Cheat Gnome" code, then press Down three times, Up three times. An option to change skills will now appear on the Cheat Gnome.

Cheat Gnome
Unlocks the Cheat Gnome that you have to unlock before you can use any other cheats. To activate use Control Pad (+) Left, Left, Left, Right, Left, B.

Easy friendship
Use the following trick to quickly increase your friendship to 100. In the Object Catalog, go to "Seating", then purchase the "Garden Swing". Place the swing on your lot. Select the swing, then place it in your inventory. Go to Town Square and place the swing on the lot and sit down. Call over your Sims and you will increase your friendship to 100 as long as your Sim is in a good mood. Note: You do not have to place the garden swing back in your inventory -- it places itself.

Give 9,999 pet points and a recipe Sent by: adryen j gonzalez ( ajgonz[at]embarmail[dot]com )
Actually my code needs help I put it on and do not know how. I've looked for it online and no one knows it is there so if you could help find it thank you. Also for a recipe that makes your sim more lovable add avacado, portabello mushroom, a mini swordfish, and cheese. Then cook and little hearts should follow it around and you, allowing you to "hook-up" with sims you don't even know that well.

Have a fox as a pet
When you are creating a family, choose the cat. Use the fur color code to unlock the "Deep Red" cat color. Choose "Head" then go to where you can change the shape of the snout. Find the longest snout available. Its face will now resemble a fox somewhat. Make sure the ears are as large and as fox-like as you get them. Then, go back to the place where you can change its fur and colors. Change the "Extra Fur" option to #2. Now, go to "Fur Markings". Choose the first one. Change that to the narrow strip on its chest. Make its color pure white. Go to the second choice of fur markings. Make its legs all black. Finally, choose the option that makes both of the ears covered in the back with the color black. Add your choice of neckwear if desired, and you will now have a pet fox.

Have a wolf as a pet
Select a Siberian Husky. Change it to make it completely white. Go to the fur markings and start at the red cross. Move six places to the right and select the pattern. Select this for the bottom layer and make sure to change it to a light brown color. Next, choose any pattern for the back. Change that to a light yellow. This is for the middle layer. For the top layer, choose the same pattern as the bottom layer. Change this to black. Your dog should slightly resemble a wolf. You are now done with the fur. Change the body type to #4 and the fur style to #1. Go to the face options and change the muzzle to the default muzzle. For the wolf personality, it is Gifted, Hyper, Friendly, Aggressive, and Pigpen. You may choose your own personality freely if desired. Add the optional fashion accessory. You should now have a pet wolf.

Increasing your hunger
When you go to the town square, on the right hand side of the restrooms (when facing them), is a bubbler. Drink it to increase your hunger for a day.

Increasing your hygiene
Splash in that pond next to the ice cream seller.

Money and upgraded buildings
If you have at least 50,000 Pet Points, go to Town Square and buy a lot of items from each store. The stores will upgrade until they are skyscrapers. When your inventory is full, go back home and place all the items on the lawn. Note: You cannot place items from the bakery on your lawn or sell them. Then, go into Grab mode and sell all the items for money. If you keep doing this, the stores in Town Square will upgrade and so will the money in your pocket. When the stores are full upgraded, go to the most valuable item and keep buying that item until your inventory is full. Then, go back home and sell all the items for more money. Note: You may need more Pet Points to complete this trick.

Money Cheat for Sims 2: Pets on Wii
After unlocking the cheat gnome, with the controller, hit B ( the trigger button) then Up, Left, Down, and Right. This will unlock the money cheat. You should then be able to click on the gnome and it should say give sim money.

B, Up, Left, Down, Right.

Naming a puppy
As soon as your dogs have had a puppy and the big balloon comes down, select the basket and choose "Rename". Name the dog. After you have done that and become a little bit of a friend with the puppy, select "Start" then go to "Personal Info". Look at your relationships. You will find the puppy's name, but the picture will show it grown up. If you do not think the name you chose suits how the pet looks, then go back and rename it.

Special food
In any refrigerator, get the following ingredients: Pork, Chicken, Tofu, and Beef. Cook them on an oven. When it comes out, the food will sparkle. Once you eat it, you will sparkle and your stats will not decrease for a short time. To create a special combo pizza, use Tofo, Soy Milk, Soy Flour, and Onions. Prepare the pizza, then put it in the oven. When it is done, your Sim will wish that he or she could eat it every day. Cook Tuna, Pwarn, Passionfruit, and Raspberry in a microwave. When you are finished you cannot take your eyes off it. Once you eat it, hearts start coming out of your body.

Zombie monkey hand
If your Sim has a couch, have him or her search it. Search the couch until you find a Zombie Monkey Hand. A message will appear at the top of the screen stating something similar to "That monkey hand really gave you a good cleaning!". Each time you find the monkey hand, it will randomly choose one of your needs and fill it up without you doing anything.